发明名称 |
OPTICAL MODULATION APPARATUS, METHOD FOR CONTROLLING OPTICAL MODULATOR, AND CONTROL DEVICE FOR OPTICAL MODULATOR |
摘要 |
An optical modulation apparatus including: a Mach-Zehnder optical modulator having two optical waveguides, two output optical waveguides and a join-and-branch portion; a phase adjustment circuit configured to output a phase control signal to phase adjustment electrodes provided respectively on the two optical waveguides; a drive circuit configured to output a modulation signal to modulation electrodes provided respectively on the two optical waveguides as a differential signal, the modulation signal modulating lights propagated in the two optical waveguides; and a signal polarity reversal circuit configured to reverse a polarity of the differential signal to be output from the drive circuit. |
申请公布号 |
US2012134619(A1) |
申请公布日期 |
2012.05.31 |
申请号 |
US201113306329 |
申请日期 |
2011.11.29 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
SEKI MORIHIRO;UESAKA KATSUMI |
分类号 |
G02F1/035 |
主分类号 |
G02F1/035 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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